if ! curl -o "$bspdir/$M-$blobhash.pk3" "$url$M-$blobhash.pk3"; then
rm -f "$bspdir/$M-$blobhash.pk3"
echo "WARNING: could not download $url$M-$blobhash.pk3, maybe not ready yet"
if ! curl -o "$bspdir/$M-$blobhash.pk3" "$url$M-$blobhash.pk3"; then
rm -f "$bspdir/$M-$blobhash.pk3"
echo "WARNING: could not download $url$M-$blobhash.pk3, maybe not ready yet"